25412621 has 8 divisors (see below), whose sum is σ = 27411384. Its totient is φ = 23420160.

The previous prime is 25412617. The next prime is 25412623. The reversal of 25412621 is 12621452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5929225 + 19483396 = 2435^2 + 4414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25412621 - 2² = 25412617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25412623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10001 + ... + 12281.

It is an arithmetic number, because the mean of its divisors is an integer number (3426423).

Almost surely, 2^25412621 is an apocalyptic number.

It is an amenable number.

25412621 is a deficient number, since it is larger than the sum of its proper divisors (1998763).

25412621 is a wasteful number, since it uses less digits than its factorization.

25412621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151.

The product of its digits is 960, while the sum is 23.

The square root of 25412621 is about 5041.0932346070. The cubic root of 25412621 is about 294.0016852449.

The spelling of 25412621 in words is "twenty-five million, four hundred twelve thousand, six hundred twenty-one".